GPS Distance Errors

Prolific posting day for me.  I saw this on Twitter,  An academic paper about system over estimate of distance by GPS devices.

WHY GPS MAKES DISTANCES BIGGER THAN THEY ARE

There is a lot of heavy duty math in the paper and if I manage to understand it, it will take a while.  But the basic gist is that the larger the error in the estimated positions along the route trajectory, the more cumulative distance errors occurs.

Screen Shot 2015-11-08 at 1.37.45 PM

In the pedestrian example they provided, the error peaked at 2.5 meters of over estimation at 45 minutes into the experiment.

Screen Shot 2015-11-08 at 1.41.30 PM

Not all that much error, but it gives you something to think about.

2 thoughts on “GPS Distance Errors

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s